Thankfully I have a second studio PC. This is the same set up to my primary (if less powerful) - Windows 7 64Bit, Avast Antivirus. In addition this has never had Poser Installed on it. Completed the installation, Antivirus saying nothing about blocking things / quarenteening them etc. Checked Firewall permissions, allowed all access. Same result. Error message coming up saying I need an internet connection. I have also opened a browser and tested api.posersoftware.com on this PC - it goes straight through to the poser website. Checked Avast settings - switched off antivirus, shields and firewall - tested again - still refusing to work.

I do wonder if the registration check is done by another program beyond the poser.exe file that may not be being picked up by my checks on the firewall?